Resource supply system

Abstract

A resource supply system. Each gas compression device (100) has a first gas inlet (110) and a first gas outlet (120) which are communicated with each other. Each gas expansion device (200) is electrically connected to a resource storage device (910); the gas expansion device (200) has a second gas inlet (210) and a second gas outlet (220) which are communicated with each other; and the second gas outlet (220) is used for discharging gas. Each first heat exchange device (300) has a first inlet (311) and a first outlet (312) which are communicated with each other; the first inlet (311) is communicated with the first gas outlet (120); and the first outlet (312) is communicated with the second gas inlet (210). A seawater distillation device (410) can exchange heat with first heat exchange devices (300); and the seawater distillation device (410) is communicated with the resource storage device (910). The resource supply system can generate both fresh water resources and electric energy resources, thereby satisfying electricity and fresh water demands of people without separately constructing power stations and ships, and having low implementation costs.

Description

Resource replenishment system TECHNICAL FIELD

[0001] The present application relates to the technical field of offshore resource supply, and particularly relates to a resource replenishment system. BACKGROUND

[0002] There are about 11000 islands in China. For the residents on the islands, it is difficult to obtain resources such as electricity and fresh water. Usually, the electricity is obtained by building a power station, and the fresh water is obtained by ship transportation. However, this method has the problem of high implementation cost.

[0003] SUMMARY

[0004] Therefore, it is necessary to provide a resource replenishment system to solve the problem of high implementation cost.

[0005] The technical scheme is as follows:

[0006] One embodiment provides a resource replenishment system, comprising:

[0007] a resource storage device;

[0008] a gas compression device, the gas compression device having a first gas inlet and a first gas outlet in communication;

[0009] a gas expansion device, the gas expansion device being electrically connected with the resource storage device, the gas expansion device having a second gas inlet and a second gas outlet in communication, the second gas outlet being used for discharging gas;

[0010] a first heat exchange device, the first heat exchange device being provided with a first inlet and a first outlet in communication, the first inlet being in communication with the first gas outlet, and the first outlet being in communication with the second gas inlet; and

[0011] a seawater distillation device, the seawater distillation device being capable of heat exchange with the first heat exchange device, and the seawater distillation device being in communication with the resource storage device.

[0012] The resource supply system, gas enters the gas compression device through the first gas inlet, the gas compression device compresses the gas to obtain high-pressure gas, the gas compression device will make the high-pressure gas have a certain compression heat in the process of compressing the gas, the high-pressure gas with the compression heat is discharged from the first gas outlet and enters the first heat exchange device through the first inlet, so that the compression heat of the high-pressure gas is transferred to the first heat exchange device, the first heat exchange device exchanges heat with the seawater distillation device again to transfer the compression heat to the seawater distillation device and use the compression heat to distill seawater to obtain fresh water, and then the fresh water is transported to the resource storage device for storage; the high-pressure gas after heat transfer in the first heat exchange device is discharged from the first outlet and enters the gas expansion device through the second gas inlet, the high-pressure gas expands in the gas expansion device and outputs external work to generate electricity, and finally the generated electric energy resource is transported to the resource storage device for storage, and the resource storage device stores the fresh water resource and the electric energy resource for people to use; compared with the traditional technology, the resource supply system can generate fresh water resource and electric energy resource at the same time, and can solve the electricity and fresh water demand of people without separately building power stations and ship transportation, and the implementation cost is low.

[0013] In one of the embodiments, the resource supply system further comprises a heat storage device and a cold storage device, the heat storage device is used for storing a heat medium, the cold storage device is used for storing a cold medium, the first heat exchange device comprises a first refrigeration module and a first heating module, the first refrigeration module has the first inlet and the first outlet in communication, the first heating module has a second inlet and a second outlet in communication, the first refrigeration module can exchange heat with the first heating module, the cold storage device is in communication with the second inlet, the heat storage device is in communication with the second outlet, and the seawater distillation device is provided with a distillation inlet and a distillation outlet in communication, the distillation inlet is in communication with the heat storage device, and the distillation outlet is in communication with the cold storage device.

[0014] In one of the embodiments, the heat storage device is provided with a heat storage cavity, a heat inlet and a heat outlet in communication, the cold storage device is provided with a cold storage cavity, a cold inlet and a cold outlet in communication, the heat storage cavity is used for storing the heat medium, the cold storage cavity is used for storing the cold medium, the cold outlet is in communication with the second inlet, the second outlet is in communication with the heat inlet, the heat outlet is in communication with the distillation inlet, and the distillation outlet is in communication with the cold inlet.

[0015] In one of the embodiments, the resource supply system further comprises a second heat exchange device, the second heat exchange device is provided with a third inlet and a third outlet in communication, the third inlet is in communication with the first outlet, the third outlet is in communication with the second gas inlet, and the second heat exchange device is in communication with the heat outlet and can exchange heat with the heat medium.

[0016] In one of the embodiments, the second heat exchange device further comprises a second heating module and a second refrigeration module, the second heating module has the third inlet and the third outlet in communication, the second refrigeration module has a fourth inlet and a fourth outlet in communication, the second heating module and the second refrigeration module can exchange heat, the fourth inlet is in communication with the heat outlet, and the fourth outlet is in communication with the distillation inlet.

[0017] In one of the embodiments, the gas compression device and the first heat exchange device are provided in at least two and one-to-one correspondence, the gas compression device and the first heat exchange device are alternately arranged, each adjacent gas compression device and first heat exchange device are combined to form a compression heat exchange unit, the first outlet of the previous compression heat exchange unit is in communication with the first gas inlet of the next compression heat exchange unit; or / and,

[0018] The second heat exchange device and the gas expansion device are provided in at least two and one-to-one correspondence, the second heat exchange device and the gas expansion device are alternately arranged, each adjacent second heat exchange device and gas expansion device are combined to form a heat exchange expansion unit, the second gas outlet of the previous heat exchange expansion unit is in communication with the third inlet of the next heat exchange expansion unit.

[0019] In one of the embodiments, the resource supply system further comprises a gas storage device and a gas conveying pipeline, the gas storage device is provided with a gas storage cavity and a gas outlet in communication, one end of the gas conveying pipeline is in communication with the gas outlet, the other end of the gas conveying pipeline is provided with a first gas conveying branch and a second gas conveying branch, the first gas conveying branch is in communication with the first outlet, and the second gas conveying branch is in communication with the third inlet.

[0020] In one of the embodiments, the gas storage device is arranged underwater, the gas storage device is further provided with a liquid inlet and a liquid outlet, and the liquid inlet and the liquid outlet are in communication with the gas storage cavity.

[0021] In one of the embodiments, the resource supply system further comprises a low-temperature expansion device and a refrigeration device, the low-temperature expansion device is provided with a third gas inlet and a cold energy outlet, the third gas inlet is in communication with the cold energy outlet, the low-temperature expansion device transmits cold energy to the refrigeration device through the cold energy outlet, and the refrigeration device is in communication with the resource storage device.

[0022] In one of the embodiments, the resource supply system further comprises a wind power generation device, and the wind power generation device is electrically connected with the gas compression device; or / and,

[0023] The resource supply system further comprises a photovoltaic power generation device, which is electrically connected with the gas compression device. BRIEF DESCRIPTION OF DRAWINGS

[0024] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the embodiment description will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without any creative effort based on these drawings.

[0025] Fig. 1 is a schematic diagram of the overall structure of the resource supply system in an embodiment of the present application.

[0026] Fig. 2 is a schematic diagram of the working principle of the gas compression device and the gas expansion device in an embodiment of the present application.

[0027] Fig. 3 is a schematic diagram of the structure of a part of the resource supply system in an embodiment of the present application.

[0028] Fig. 4 is a schematic diagram of the structure of the compression heat exchange unit in an embodiment of the present application.

[0029] Fig. 5 is a schematic diagram of the structure of another part of the resource supply system in an embodiment of the present application.

[0030] Fig. 6 is a schematic diagram of the structure of the heat exchange expansion unit in an embodiment of the present application.

[0031] Fig. 7 is a schematic diagram of the structure of the first heat exchange device in an embodiment of the present application.

[0032] Fig. 8 is a schematic diagram of the structure of the second heat exchange device in an embodiment of the present application.

[0033] BRIEF DESCRIPTION OF DRAWINGS

[0034] 100, gas compression device; 110, first gas inlet; 120, first gas outlet; 130, compression heat exchange unit; 200, gas expansion device; 210, second gas inlet; 220, second gas outlet; 230, heat exchange expansion unit; 240, cryogenic expansion device; 250, refrigeration device; 251, ice making mechanism; 252, refrigeration mechanism; 300, first heat exchange device; 310, first refrigeration module; 311, first inlet; 312, first outlet; 320, first heating module; 321, second inlet; 322, second outlet; 410, seawater distillation device; 420, heating device; 500, heat storage device; 510, heat inlet; 520, heat outlet; 600, cold storage device; 610, cold inlet; 620, cold outlet; 710, wind power generation device; 720, photovoltaic power generation device; 800, second heat exchange device; 810, second heating module; 811, third inlet; 812, third outlet; 820, second refrigeration module; 821, fourth inlet; 822, fourth outlet; 910, resource storage device; 920, gas storage device; 921, air inlet; 930, gas pipeline; 931, first gas sub-pipeline; 932, second gas sub-pipeline; 933, first valve; 934, second valve. DETAILED DESCRIPTION

[0035] In order to make the above objectives, features and advantages of the present application more apparent, specific embodiments of the present application are described in detail below with reference to the accompanying drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present application. However, the present application can be practiced in a number of different ways beyond the specific embodiments described herein and by one of ordinary skill in the art without departing from the spirit and scope of the present application, and it is therefore contemplated to be limited only by the claims set forth below.

[0036] In the description of the present application, it should be understood that if the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like appear, these terms indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the purpose of facilitating the description of the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0037] In addition, if there are these terms "first", "second", these terms are only used for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features. Therefore, the features defined as "first", "second" can be explicitly or implicitly included at least one of the features. In the description of the present application, if the term "a plurality of" appears, the meaning of "a plurality of" is at least two, such as two, three, etc., unless otherwise explicitly specified and limited.

[0038] In the present application, unless otherwise explicitly specified and limited, if there are terms "installation", "connection", "connection", "fixation" and the like, these terms should be understood in a broad sense. For example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the internal communication of two elements or the interaction relationship between two elements, unless otherwise explicitly limited. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0039] In the present application, unless otherwise explicitly specified and limited, if there are similar descriptions such as "first feature on" or "below" the second feature, the meaning can be that the first and second features are in direct contact, or the first and second features are indirectly in contact through an intermediate medium. Moreover, the first feature "above", "above" and "above" the second feature can be that the first feature is directly above or obliquely above the second feature, or only indicates that the horizontal height of the first feature is higher than that of the second feature. The first feature "below", "below" and "below" the second feature can be that the first feature is directly below or obliquely below the second feature, or only indicates that the horizontal height of the first feature is less than that of the second feature.

[0040] It should be noted that if an element is referred to as "fixed to" or "disposed to" another element, it can be directly on another element or there can be a middle element. If an element is considered to be "connected" to another element, it can be directly connected to another element or there can be a middle element. If present, the terms "vertical", "horizontal", "up", "down", "left", "right" and similar expressions used in the present application are only for the purpose of description, and do not represent the only implementation.

[0041] Referring to FIGS. 1-8, one embodiment of the present application provides a resource supply system, which comprises a resource storage device 910, a gas compression device 100, a gas expansion device 200, a first heat exchange device 300, and a seawater distillation device 410. The gas compression device 100 has a first gas inlet 110 and a first gas outlet 120 in communication. The gas expansion device 200 is electrically connected to the resource storage device 910. The gas expansion device 200 has a second gas inlet 210 and a second gas outlet 220 in communication, and the second gas outlet 220 is used to discharge gas. The first heat exchange device 300 is provided with a first inlet 311 and a first outlet 312 in communication. The first inlet 311 is in communication with the first gas outlet 120, and the first outlet 312 is in communication with the second gas inlet 210. The seawater distillation device 410 can exchange heat with the first heat exchange device 300, and the seawater distillation device 410 is in communication with the resource storage device 910.

[0042] In the above resource supply system, the gas enters the gas compression device 100 through the first gas inlet 110. The gas compression device 100 compresses the gas to obtain high-pressure gas. The gas compression device 100 will cause the high-pressure gas to have a certain compression heat during the compression process. The high-pressure gas with compression heat is discharged from the first gas outlet 120 and enters the first heat exchange device 300 through the first inlet 311, so that the compression heat of the high-pressure gas is transferred to the first heat exchange device 300. The first heat exchange device 300 exchanges heat with the seawater distillation device 410 to transfer the compression heat to the seawater distillation device 410 and use it to distill seawater to obtain fresh water. The fresh water is then transported to the resource storage device 910 for storage. After the heat transfer in the first heat exchange device 300 is completed, the high-pressure gas is discharged from the first outlet 312 and enters the gas expansion device 200 through the second gas inlet 210. The high-pressure gas expands in the gas expansion device 200 and outputs external work to generate electricity. Finally, the generated electric energy resource is transported to the resource storage device 910 for storage. The resource storage device 910 stores fresh water resources and electric energy resources for people to use. Compared with the traditional technology, the above resource supply system can simultaneously generate fresh water resources and electric energy resources, and can solve people's electricity and fresh water needs without the need to build power stations and ship transportation, and has low implementation cost.

[0043] As an explanation, the gas in the above embodiment can be air, the first gas inlet 110 of the gas expansion device 200 is in communication with the outside, so as to guide the air outside into the gas compression device 100 through the first gas inlet 110, the gas compression device 100 compresses the air to obtain high-pressure air with compression heat, the high-pressure air enters the first heat exchange device 300 from the first inlet 311, so as to transfer the compression heat of the high-pressure air to the seawater distillation device 410 through the first heat exchange device 300 and then obtain fresh water; it can be understood that the gas in the above embodiment can also be other kinds of gas except air, which is not limited here.

[0044] Further, the generator is also included, the high-pressure gas enters the gas expansion device 200 through the second gas inlet 210, the high-pressure gas is expanded and decompressed in the gas expansion device 200 to output external work, and the generator converts the external work into electric energy and transmits it to the resource storage device 910.

[0045] Specifically, the seawater distillation device 410 can absorb the heat of the first heat exchange device 300, and use the heat to distill seawater to obtain fresh water.

[0046] As a supplement, the resource supply system in the above embodiment can not only be used to supply electricity and water for residents, but also can be arranged on the coast of a coastal city or an island to provide electric energy or fresh water and other resources for passing ocean-going ships or fishing boats and the like, so as to drive the development of the surrounding sea area.

[0047] Further, the resource storage device 910 can also be used as a resource supply station to supply electric energy or fresh water for passing ocean-going ships or fishing boats and the like.

[0048] Please refer to FIGS. 2 to 8, in an embodiment, the resource supply system further includes a heat storage device 500 and a cold storage device 600, the heat storage device 500 is used to store a heat medium, the cold storage device 600 is used to store a cold medium, the first heat exchange device 300 includes a first refrigeration module 310 and a first heating module 320, the first refrigeration module 310 has a first inlet 311 and a first outlet 312 in communication, the first heating module 320 has a second inlet 321 and a second outlet 322 in communication, the first refrigeration module 310 can exchange heat with the first heating module 320, the cold storage device 600 is in communication with the second inlet 321, the heat storage device 500 is in communication with the second outlet 322, and the seawater distillation device 410 is provided with a distillation inlet and a distillation outlet in communication, the distillation inlet is in communication with the heat storage device 500, and the distillation outlet is in communication with the cold storage device 600.

[0049] The cold medium in the cold storage device 600 is discharged and enters the first heat production module 320 through the second inlet 321, the high-pressure gas with compression heat enters the first refrigeration module 310 from the first inlet 311, and the cold medium in the first heat production module 320 exchanges heat with the high-pressure gas with compression heat in the first refrigeration module 310, so that the high-pressure gas transmits its compression heat to the cold medium, and the cold medium is converted into hot medium, the hot medium is discharged from the second outlet 322 and enters the heat storage device 500, the hot medium in the heat storage device 500 is discharged and enters the seawater distillation device 410 through the distillation inlet, the seawater distillation device 410 absorbs the heat of the hot medium to distill seawater and obtain fresh water, then the hot medium is converted into cold medium, and the cold medium is discharged from the distillation outlet and enters the cold storage device 600, and the above process is repeated to obtain fresh water resources; in this way, not only fresh water resources can be effectively obtained, but also the cold medium and the hot medium can be reused, resources are saved, and the environment is more friendly.

[0050] Please refer to FIG. 3, in an embodiment, the heat storage device 500 is provided with a communicating heat storage cavity, a heat inlet 510 and a heat outlet 520, the cold storage device 600 is provided with a communicating cold storage cavity, a cold inlet 610 and a cold outlet 620, the heat storage cavity is used for storing hot medium, the cold storage cavity is used for storing cold medium, the cold outlet 620 is communicated with the second inlet 321, the second outlet 322 is communicated with the heat inlet 510, the heat outlet 520 is communicated with the distillation inlet, and the distillation outlet is communicated with the cold inlet 610.

[0051] The cold medium in the cold storage cavity is discharged from the cold outlet 620 and enters the first heat production module 320 through the second inlet 321, the high-pressure gas with compression heat enters the first refrigeration module 310 from the first inlet 311, and the cold medium in the first heat production module 320 exchanges heat with the high-pressure gas with compression heat in the first refrigeration module 310, so that the high-pressure gas transmits its compression heat to the cold medium, and the cold medium is converted into hot medium, the hot medium is discharged from the second outlet 322 and enters the heat storage cavity through the heat inlet 510, the hot medium in the heat storage cavity is discharged from the heat outlet 520 and enters the seawater distillation device 410 from the distillation inlet, the hot medium transmits its heat to the seawater distillation device 410 to distill seawater and obtain fresh water, at this time, the heat of the hot medium is absorbed and converted into cold medium, the cold medium is discharged from the distillation outlet and enters the cold storage cavity through the cold inlet 610, and the above process is repeated to obtain fresh water; in this way, not only fresh water resources can be effectively obtained, but also the cold medium and the hot medium can be reused, resources are saved, and the environment is more friendly.

[0052] Optionally, the hot medium and the cold medium in the above embodiment can be liquid heat exchange medium such as water and oil, or gas heat exchange medium, which is not limited here, and preferably, water is used as the heat exchange medium, which is low in cost, easy to supplement and reliable in heat exchange effect.

[0053] As an explanation, the heat inlet 510 in the above embodiment represents a passage for entering a hot medium, and the heat outlet 520 represents a passage for discharging a hot medium; the cold outlet 620 represents a passage for discharging a cold medium, and the cold inlet 610 represents a passage for entering a cold medium.

[0054] Referring to FIGS. 5-6, in an embodiment, the resource supply system further comprises a second heat exchange device 800, which is provided with a third inlet 811 and a third outlet 812 in communication, the third inlet 811 is in communication with the first outlet 312, and the third outlet 812 is in communication with the second gas inlet 210, the second heat exchange device 800 is in communication with the heat outlet 520 and can exchange heat with the hot medium.

[0055] The high-pressure gas with compression heat compressed by the gas compression device 100 is cooled after passing through the first refrigeration module 310, and the cooled gas is discharged from the first outlet 312 and enters the second heat exchange device 800 from the third inlet 811, and the heat storage device 500 can transfer the heat of the heat medium in the heat storage cavity to the second heat exchange device 800 to heat the gas in the second heat exchange device 800, and the heated gas has a larger pressure, and the gas with a larger pressure is discharged from the third outlet 812 and enters the gas expansion device 200 from the second gas inlet 210, and the gas with a larger pressure is expanded and decompressed in the gas expansion device 200 to output more external work, so that the gas expansion device 200 can generate more electric energy and improve the power generation efficiency.

[0056] Further, the heat storage device 500 can exchange heat with the second heat exchange device 800 to transfer the heat of the heat medium in the heat storage cavity to the gas in the second heat exchange device 800, and the gas in the second heat exchange device 800 is heated to have a larger pressure, and the gas with a larger pressure is expanded and decompressed in the gas expansion device 200 to output more external work, thereby generating more electric energy and improving the power generation efficiency.

[0057] Referring to FIGS. 5, 6 and 8, in an embodiment, the second heat exchange device 800 further comprises a second heating module 810 and a second refrigeration module 820, the second heating module 810 has a third inlet 811 and a third outlet 812 in communication, and the second refrigeration module 820 has a fourth inlet 821 and a fourth outlet 822 in communication, the second heating module 810 and the second refrigeration module 820 can exchange heat, the fourth inlet 821 is in communication with the heat outlet 520, and the fourth outlet 822 is in communication with the distillation inlet.

[0058] The heat medium in the heat storage cavity is discharged from the heat outlet 520 and enters the second refrigeration module 820 through the fourth inlet 821. The low-temperature gas after heat exchange in the first refrigeration module 310 is discharged from the first outlet 312 and enters the second heating module 810 from the third inlet 811. The low-temperature gas in the second heating module 810 exchanges heat with the heat medium in the second refrigeration module 820, so that the heat medium transmits its heat to the low-temperature gas. After being heated by the low-temperature gas, the pressure of the gas increases. The gas with increased pressure is discharged from the third outlet 812 and enters the gas expansion device 200. The gas with increased pressure expands and depressurizes in the gas expansion device 200 to output more external work, so that the gas expansion device 200 can generate more electric energy and improve the power generation efficiency.

[0059] Specifically, in one embodiment, the seawater distillation device 410 is a low-temperature multi-effect distillation seawater desalination device. The boiling point of seawater decreases with the decrease of pressure, and each pressure corresponds to a boiling point. The internal pressure of the low-temperature multi-effect distillation seawater desalination device is smaller, so the boiling point of seawater in the low-temperature multi-effect distillation seawater desalination device is also lower, and the required distillation temperature is also lower. After the heat medium transmits part of its heat to the low-temperature gas in the second heat exchange device 800, the heat medium enters the low-temperature multi-effect distillation seawater desalination device and distills seawater to obtain fresh water by using the remaining part of the heat of the heat medium. The required distillation temperature of the low-temperature multi-effect distillation seawater desalination device is low, so even if the heat remaining in the heat medium is not much, the seawater can still be distilled, thereby improving the utilization rate of heat in the heat medium and the distillation efficiency.

[0060] Further, the principle of the low-temperature multi-effect distillation seawater desalination device is to use the secondary steam generated by distillation as heating steam to heat the feed liquid of the next effect. The feed liquid evaporates in the next-effect evaporator with lower pressure and boiling point, generating new secondary steam, which continuously heats and evaporates in the next-effect evaporator, so that the heat energy consumed by evaporation is fully reused to reduce energy consumption. For multi-effect distillation, the heat source of the first effect is fresh steam, the next effect acts as a condenser of the previous effect, and the steam generated by the previous effect is condensed in the next effect, thereby improving the distillation efficiency and energy utilization rate.

[0061] Still further, the downstream section of the low-temperature multi-effect distillation seawater desalination device is also provided with a heating device 420. The heating device 420 can absorb the remaining heat of the heat medium discharged from the distillation outlet and be used for heating or producing domestic hot water, so as to further improve the energy utilization rate of the heat medium.

[0062] Please refer to FIG. 4, in one embodiment, the gas compression device 100 and the first heat exchange device 300 are each provided with at least two and are correspondingly arranged one by one, the gas compression device 100 and the first heat exchange device 300 are alternately arranged one by one, and each adjacent gas compression device 100 and first heat exchange device 300 are matched to form a compression heat exchange unit 130, and the first outlet 312 of the previous compression heat exchange unit 130 is in communication with the first gas inlet 110 of the subsequent compression heat exchange unit 130.

[0063] By providing at least two compression heat exchange units 130, the gas can be compressed in multiple stages, and the compressed gas can be heated in multiple stages, so that the gas can have a greater pressure to release more external work for power generation, and more compression heat of the gas can be absorbed for distilling seawater, further improving the power generation efficiency and the freshwater generation efficiency.

[0064] Specifically, in the embodiment shown in FIG. 4, the compression heat exchange unit 130 is provided with three and is respectively a first compression heat exchange unit 130, a second compression heat exchange unit 130 and a third compression heat exchange unit 130, the first gas inlet 110 of the first compression heat exchange unit 130 is used for introducing gas, the gas is compressed and heat exchanged by the first compression heat exchange unit 130, then enters the gas compression device 100 of the second compression heat exchange unit 130 from the first gas inlet 110 of the second compression heat exchange unit 130, and then is compressed and heat exchanged by the second compression heat exchange unit 130, then enters the gas compression device 100 of the third heat exchange unit from the first gas inlet 110 of the third compression heat exchange unit 130, and finally is discharged from the first outlet 312 of the third compression heat exchange unit 130.

[0065] Taking the above embodiment as an example, when the compression heat exchange unit 130 is provided with other quantities, similar to the above embodiment, details are not repeated here.

[0066] Please refer to FIG. 6, as an embodiment that can be implemented simultaneously with the above embodiment, the second heat exchange device 800 and the gas expansion device 200 are each provided with at least two and are correspondingly arranged one by one, the second heat exchange device 800 and the gas expansion device 200 are alternately arranged one by one, and each adjacent second heat exchange device 800 and gas expansion device 200 are matched to form a heat exchange expansion unit 230, and the second gas outlet 220 of the previous heat exchange expansion unit 230 is in communication with the third inlet 811 of the subsequent heat exchange expansion unit 230.

[0067] By providing at least two heat exchange expansion units 230, the gas can be heated in multiple stages, and the heated gas can be expanded in multiple stages, so that the gas can have a greater pressure to release more external work for power generation, improving the power generation efficiency.

[0068] Specific to the embodiment shown in Figure 6, the heat exchange expansion unit 230 is provided with three and is respectively a first heat exchange expansion unit 230, a second heat exchange expansion unit 230 and a third heat exchange expansion unit 230, the third inlet 811 of the first heat exchange expansion unit 230 is used for passing in low-temperature gas, the gas is subjected to heat exchange expansion through the first heat exchange expansion unit 230, enters the second heat exchange device 800 of the second heat exchange expansion unit 230 from the third inlet 811 of the second expansion heat exchange unit, is subjected to expansion heat exchange through the second heat exchange expansion unit 230, enters the second heat exchange device 800 of the third heat exchange expansion unit 230 from the third inlet 811 of the third heat exchange expansion unit 230, and is finally discharged from the second gas outlet 220 of the third heat exchange expansion unit 230.

[0069] The above embodiment is taken as an example, when the heat exchange expansion unit 230 is provided with other quantities, similar to the above embodiment, details are not repeated here.

[0070] Please refer to Figure 1, in an embodiment, the resource supply system further comprises a gas storage device 920 and a gas conveying pipeline 930, the gas storage device 920 is provided with a gas storage cavity and a gas inlet 921 in communication, one end of the gas conveying pipeline 930 is in communication with the gas inlet 921, the other end of the gas conveying pipeline 930 is provided with a first gas conveying branch 931 and a second gas conveying branch 932, the first gas conveying branch 931 is in communication with the first outlet 312, and the second gas conveying branch 932 is in communication with the third inlet 811.

[0071] After the gas is compressed through the gas compression device 100, is subjected to heat exchange through the first heat exchange device 300 and is discharged from the first outlet 312, the gas discharged from the first outlet 312 can enter the gas conveying pipeline 930 through the first gas conveying branch 931 and enter the gas storage cavity of the gas storage device 920 through the gas inlet 921, when power generation is needed, the gas in the gas storage cavity enters the gas conveying pipeline 930 from the gas inlet 921 and enters the second heat exchange device 800 through the second gas conveying branch 932 and the third inlet 811, the second heat exchange device 800 heats the gas and enters the gas expansion device 200 from the third outlet 812 for subsequent power generation, by providing the gas storage device 920, the pressurized gas can be collected, and when power is needed, the second heat exchange device 800 and the gas expansion device 200 are used for power generation, thereby improving the use flexibility of the resource supply system.

[0072] Please refer to Figure 1, in an embodiment, the gas storage device 920 is used for being arranged underwater, the gas storage device 920 is further provided with a liquid inlet and a liquid outlet, both the liquid inlet and the liquid outlet are in communication with the gas storage cavity.

[0073] When there is no gas in the gas storage cavity, liquid enters the gas storage cavity through the liquid inlet under the action of atmospheric pressure. After being compressed by the gas compression device 100, the gas has a certain pressure. The gas with pressure enters the gas storage cavity through the gas pipeline 930 and the air inlet 921. Since the density of the gas is less than that of the liquid in the gas storage cavity, as the gas continuously fills the gas storage cavity through the air inlet 921, the water in the gas storage cavity is gradually driven out by the gas through the liquid outlet. Since the surrounding liquid also has a certain pressure, the gas filled into the gas storage cavity also has a certain pressure. When power generation is needed, the gas with a certain pressure in the gas storage cavity enters the second heat exchange device 800 through the gas pipeline 930. The second heat exchange device 800 heats the gas to further increase the pressure of the gas. Subsequently, the gas enters the gas expansion device 200 to do work and generate electricity. Such a configuration has low implementation cost and good energy storage effect. The use of gas-water mutual driving realizes constant-pressure energy storage and constant-pressure energy release, reduces the residual gas amount in the gas storage cavity, and improves the cycle efficiency of the entire system.

[0074] Please refer to FIG. 2. In one embodiment, the first gas delivery branch 931 is provided with a first valve 933 for controlling the opening and closing of the first gas delivery branch 931.

[0075] As an embodiment that can be implemented simultaneously with the above-mentioned embodiment, the second gas delivery branch 932 is provided with a second valve 934 for controlling the opening and closing of the second gas delivery branch 932.

[0076] The first valve 933 and the second valve 934 can respectively control the opening and closing of the first gas delivery branch 931 and the second gas delivery branch 932 to control the flow path of the gas. When it is needed to introduce the compressed gas into the gas storage device 920, the first valve 933 is opened and the second valve 934 is closed. When it is needed to discharge the gas in the gas storage device 920 to the second heat exchange device 800, the first valve 933 is closed and the second valve 934 is opened. Such a configuration is easy to operate and has low implementation cost.

[0077] Please refer to FIG. 1. In one embodiment, the gas pipeline 930 adopts a flexible pressure-bearing pipe. The flexible pressure-bearing pipe is connected to the underwater gas storage device 920 along the slope surface of the shore. The flexible pressure-bearing pipe is easy to match the shape of the slope surface of the shore and has small influence on the arrangement along the slope by seawater flow, thereby saving the support and fixing cost of the pipeline.

[0078] Please refer to FIG. 2 and FIG. 5, in an embodiment, the resource supply system further comprises a low-temperature expansion device 240 and a refrigeration device 250, the low-temperature expansion device 240 is provided with a third gas inlet and a cold outlet, the third gas inlet is communicated with the gas expansion device 200, the cold outlet is communicated with the refrigeration device 250, the low-temperature expansion device 240 transmits cold to the refrigeration device 250 through the cold outlet, and the refrigeration device 250 is communicated with the resource storage device 910.

[0079] The gas expanded by the gas expansion device 200 enters the low-temperature expansion device 240 for further expansion, the low-temperature expansion device 240 expands the gas to form cold, and the cold is transmitted to the refrigeration device 250 from the cold outlet for subsequent refrigeration, so as to realize efficient utilization of cold energy of the gas.

[0080] Further, please refer to FIG. 2 and FIG. 5, the refrigeration device 250 comprises an ice making mechanism 251 and a refrigeration mechanism 252, the ice making mechanism 251 is communicated with the cold outlet, and the refrigeration mechanism 252 is communicated with the ice making mechanism 251; the cold discharged from the cold outlet enters the ice making mechanism 251 first, the ice making mechanism 251 absorbs part of the cold for ice making, and the remaining cold is transmitted to the refrigeration mechanism 252 for refrigeration, so as to realize multi-stage and efficient utilization of the cold.

[0081] Further, the ice making mechanism 251 is communicated with the resource storage device 910, so as to transmit the ice made by the ice making mechanism 251 to the resource storage device 910 for people or ocean-going ships, fishing boats and the like.

[0082] Specifically, please refer to FIG. 5, the gas expansion device 200 is provided with three and is respectively a first gas expansion device 200, a second gas expansion device 200 and a third gas expansion device 200, and the low-temperature expansion device 240 is connected to the outlet of the second gas expansion device 200 and extracts part of the gas for generating cold.

[0083] Please refer to FIG. 1, in an embodiment, the resource supply system further comprises a wind power generation device 710, and the wind power generation device 710 is electrically connected with the gas compression device 100.

[0084] The wind power generation device 710 supplies power to the gas compression device 100, which is low in cost and environmentally friendly.

[0085] Please refer to FIG. 1, as an embodiment capable of being implemented simultaneously with the above-mentioned embodiment, the resource supply system further comprises a photovoltaic power generation device 720, and the photovoltaic power generation device 720 is electrically connected with the gas compression device 100.

[0086] The photovoltaic power generation device 720 supplies power to the gas compression device 100, which is low in cost and environmentally friendly.

[0087] Specifically, referring to FIG. 1, the photovoltaic power generation device 720 comprises a sea floating photovoltaic power generation mechanism to make full use of the sea surface space and improve the power generation efficiency.

[0088] In a preferred embodiment, the wind power generation device 710 and the photovoltaic power generation device 720 are electrically connected with the gas compression device 100, solving the problem of large day and night fluctuation of single renewable energy power generation, and effectively improving the power supply stability.

[0089] Further, during the low electricity consumption period, the wind power generation device 710 and the photovoltaic power generation device 720 supply power to the gas compression device 100, the gas compression device 100 compresses the external air and stores it into the underwater gas storage device 920, so that the high-pressure gas is stored in the gas storage cavity, when the electricity demand peak, the wind power generation device 710 and the photovoltaic power generation device 720 directly supply power to the power grid, at the same time, the gas expansion device 200 uses the gas in the gas storage cavity to generate electricity, before entering the gas expansion device 200, the gas is heated by the second heat exchange device 800 to improve the subsequent power generation efficiency, thereby preventing the intermittent instability of power supply.

[0090] In an embodiment, the electric energy generated by the wind power generation device 710 and the photovoltaic power generation device 720 is divided into two paths, one of which is connected with the power grid, and the other is connected with the motor, and the motor is electrically connected with the gas compression device 100 for supplying power to the gas compression device 100.

[0091] Please refer to Fig. 1, in one preferred embodiment of the present application, the gas storage device 920 is arranged 600 meters underwater, the power of the gas compression device 100 is 200 MW, the energy storage capacity of the gas storage device 920 is 1000 MWh, during energy storage, the gas compression device 100 compresses the atmospheric air to 6 Pa and stores it in the underwater gas storage device 920, the inter-stage compression heat generated by the gas compression device 100 is recovered by the first heat exchange device 300 using water, the temperature of the hot water reaches 170 ℃, and then is stored in the heat storage device 500, during energy release, the high-pressure gas in the underwater gas storage device 920 is released to drive the gas expansion device 200 to generate power. The temperature of the gas released from the underwater gas storage device 920 is relatively low, about 30 ℃. In the second heat exchange device 800, the cold air is heated by the hot water to reach 140 ℃ and enters the gas expansion device 200 to do work, the hot water from the second heat exchange device 800 is cooled to 75 ℃ and then enters the seawater distillation device 410 to produce fresh water. After producing fresh water, the temperature of the hot water is reduced from 75 to 60 ℃, and then enters the heating device 420. In the heating device 420, hot water at 50 ℃ is produced and used for heating or domestic hot water, part of the gas led out from the gas expansion device 200 enters the low-temperature expansion device 240 to generate power while using the gas expansion to generate low-temperature gas at -30 ℃. The low-temperature gas enters the refrigeration device 250, the low-temperature gas at -30 to -15 ℃ is used to make ice, and the gas at -15 to 0 ℃ is used to produce cold water at 7 / 14 ℃. The electric energy generated by the gas expansion device 200 and the low-temperature expansion device 240, the fresh water produced by the seawater distillation device 410, and the ice and cold water produced by the refrigeration device 250 are all transported to the resource storage device 910 for use by people or ocean-going ships, fishing boats, etc.

[0092] Additionally, each device in the above embodiment can be connected through different pipelines, and the pipeline connection mode can refer to Fig. 1. Those skilled in the art can understand that other connection modes can also be used to connect each device, which is not limited here.

[0093] The technical features of the above embodiments can be combined arbitrarily, and to make the description concise, all possible combinations of the technical features in the above embodiments are not described, but as long as the combinations of the technical features do not exist contradictory, they should be considered as the scope of the present application.

[0094] The above embodiments only express several implementation manners of the present application, and the description is relatively specific and detailed, but it should not be understood as a limitation on the patent scope of the application. It should be pointed out that for ordinary skilled persons in the art, some modifications and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the protection scope of the patent of the present application should be subject to the appended claims.

Claims

1. A resource replenishment system, characterized by, The resource supply system comprises: a resource storage device; a gas compression device having a first gas inlet and a first gas outlet in communication; a gas expansion device electrically connected with the resource storage device, the gas expansion device having a second gas inlet and a second gas outlet in communication, the second gas outlet being used for discharging gas; a first heat exchange device provided with a first inlet and a first outlet in communication, the first inlet being in communication with the first gas outlet, and the first outlet being in communication with the second gas inlet; and a seawater distillation device capable of exchanging heat with the first heat exchange device, the seawater distillation device being in communication with the resource storage device.

2. The resource replenishment system of claim 1, wherein, The resource supply system further comprises a heat storage device and a cold storage device, the heat storage device being used for storing a heat medium, the cold storage device being used for storing a cold medium, the first heat exchange device comprising a first refrigeration module and a first heating module, the first refrigeration module having the first inlet and the first outlet in communication, the first heating module having a second inlet and a second outlet in communication, the first refrigeration module being capable of exchanging heat with the first heating module, the cold storage device being in communication with the second inlet, the heat storage device being in communication with the second outlet, the seawater distillation device being provided with a distillation inlet and a distillation outlet in communication, the distillation inlet being in communication with the heat storage device, and the distillation outlet being in communication with the cold storage device.

3. The resource replenishment system of claim 2, wherein, The heat storage device is provided with a heat storage cavity, a heat inlet and a heat outlet in communication, the cold storage device is provided with a cold storage cavity, a cold inlet and a cold outlet in communication, the heat storage cavity being used for storing the heat medium, and the cold storage cavity being used for storing the cold medium, the cold outlet being in communication with the second inlet, the second outlet being in communication with the heat inlet, the heat outlet being in communication with the distillation inlet, and the distillation outlet being in communication with the cold inlet.

4. The resource replenishment system of claim 3, wherein, The resource supply system further comprises a second heat exchange device provided with a third inlet and a third outlet in communication, the third inlet being in communication with the first outlet, and the third outlet being in communication with the second gas inlet, the second heat exchange device being in communication with the heat outlet and capable of exchanging heat with the heat medium.

5. The resource replenishment system of claim 4, wherein, The second heat exchange device further comprises a second heating module and a second refrigeration module, the second heating module having the third inlet and the third outlet in communication, the second refrigeration module having a fourth inlet and a fourth outlet in communication, the second heating module being capable of exchanging heat with the second refrigeration module, the fourth inlet being in communication with the heat outlet, and the fourth outlet being in communication with the distillation inlet.

6. The resource replenishment system of claim 4, wherein, The gas compression device and the first heat exchange device are each provided with at least two and are arranged one by one in correspondence, the gas compression device and the first heat exchange device are arranged alternately one by one, each adjacent gas compression device and first heat exchange device are matched to form a compression heat exchange unit, the first outlet of a previous compression heat exchange unit is in communication with the first gas inlet of a subsequent compression heat exchange unit; or / and, The second heat exchange device and the gas expansion device are provided with at least two and are correspondingly arranged, the second heat exchange device and the gas expansion device are alternately arranged, and each adjacent second heat exchange device and gas expansion device form a heat exchange expansion unit.

7. The resource replenishment system of claim 4, wherein, The resource supply system further comprises a gas storage device and a gas conveying pipeline, the gas storage device is provided with a gas storage cavity and a gas outlet in communication, one end of the gas conveying pipeline is in communication with the gas outlet, the other end of the gas conveying pipeline is provided with a first gas conveying branch and a second gas conveying branch, the first gas conveying branch is in communication with the first outlet, and the second gas conveying branch is in communication with the third inlet.

8. The resource replenishment system of claim 7, wherein, The gas storage device is arranged underwater, and the gas storage device is further provided with a liquid inlet and a liquid outlet, both the liquid inlet and the liquid outlet are in communication with the gas storage cavity.

9. The resource replenishment system of claim 1, wherein, The resource supply system further comprises a low-temperature expansion device and a refrigeration device, the low-temperature expansion device is provided with a third gas inlet and a cold energy outlet, the third gas inlet is in communication with the communication, the cold energy outlet is in communication with the refrigeration device, the low-temperature expansion device transmits cold energy to the refrigeration device through the cold energy outlet, and the refrigeration device is in communication with the resource storage device.

10. The resource replenishment system of any of claims 1-9, wherein, The resource supply system further comprises a wind power generation device, and the wind power generation device is electrically connected with the gas compression device; or / and, The resource supply system further comprises a photovoltaic power generation device, and the photovoltaic power generation device is electrically connected with the gas compression device.

Images